300 blackout vs 6.8 spc? Wanting to use for hunting

[NW-GSP]

I have a complete ar lower and am now trying to decide on what caliber I want to go with.
I do reload and there is a chance I will get a suppressor in the future.

I have heard that the 6.8 is better for longer ranges but have bit seen it for myself.

Thanks for any info

[CAMPMEAT]

Heredoggydoggy would be a good one to contact.

[philepe]

6.8 has a pretty good range of bullets available. Everything from 85 gr. going near 3000 fps to 120 gr going 2600-2800 fps.  It is pretty much right in between a 5.56 and .308 in terms of power.  it is realistically 300-350 yard max ethical hunting range.
300 blackout im not too familiar with, so I wont speak about it.

[carpsniperg2]

6.8 for sure if big game hunting. The 300 blk is the ideal subsonic gun. Not a long range shooter.

[Special T]

300 black out is an ideal 100yrd under sub sonic round. have a buddy that reloads it and loves it for what it is.

[NW-GSP]

Sounds like the 6.8 will be a better round for what I'm wanting to use it for.

[Coasthunterjay]

Sounds like the 6.8 will be a better round for what I'm wanting to use it for.

 

[Yondering]

300 black out is an ideal 100yrd under sub sonic round. have a buddy that reloads it and loves it for what it is.

I agree the 6.8 is better at longer range, but you guys are missing the point of the 300 Blackout. It's essentially AK (7.62x39) ballistics in an AR platform, that can also run subsonic loads without modification. It's not a long range caliber, but is certainly capable of more than 100 yards; the ballistics aren't that far off from a 30-30.

[hillbilli]

The .300 is going to drop of more with distance, but should be good out past 150yds.. advantage of it is its the same mags, bolt, everythign but barrel- as 5.56.. so to build one all you have to change is the barrel- also brass can be made from 5.56 brass. as a hunting round that might be used beyond "woods" ranges, 6.8 is better, and 6.5 grendel/sporter is better than that (if you can find one)..

[Biggerhammer]

Never owned either, but you would be better suited to go with the 6.8 SPC. Or just cover all your bases, leave the 6.8 in the rear view and purchase a 6.5 Grendel/ 6.5 LBC barrel with a matching bolt, along with a couple magazines and your off and running. We have taken Mule deer clean out to 496 yards with the Grendel chambering and a 16" M4 barrel on a AR.

Just another option, it's all personal preference.

[carpsniperg2]

  Another great and better choice yet.

I have a 300blk and with super sonic bullets I would have no problems shooting a deer out to 200 yards or so. That is not what I bought it for. I had a 6.8 for a little while but there is no comparison to the Grendel.

[NW-GSP]

Wow the 6.5 is very impressive!  I think you have changed my mind

[carpsniperg2]

It is a beast in the ar-15 platform. The only cartridge I like more then the Grendel for big game hunting is the 243wssm. Another monster in the ar-15 platform.

[Biggerhammer]

It is a beast in the ar-15 platform. The only cartridge I like more then the Grendel for big game hunting is the 243wssm. Another monster in the ar-15 platform.

Carp,

Did you do a gas gun in a .243 WSSM? I've always thought about it but never made it happen.

[carpsniperg2]

You know it I have not got to play with it to much been busy hunting. Have 5 different loads sitting here to play with. Decked it out like normal  The Upper is dtech, good stuff!!!

[Heredoggydoggy]

If you like the 6.8 SPC, you'll like the 6mmX6.8 SPC even better.  I have both, and I'm about ready to put my 6.8 SPC up for sale.  But I have so much ammo and bullets for it! 

The 6mm 6.8SPC barrel is from Black Hole Weaponry.  They've moved from Moses Lake, WA to Oregon since I ordered my barrel, I'm told.  Same bolt and mags as the 6.8 SPC, so conversion is a snap.  They even make ammo for it, but it's a buck a round, so I make my own....

[Biggerhammer]

SWEEET! Should have known you didn't go with a OLY.

[carpsniperg2]

SWEEET! Should have known you didn't go with a OLY.

OLY 

I am trying not to be to bad with the 30-378 build going on. Yet I found a place that I should have not found I am sure you might have seen them but http://www.ar-10-rifles.com/index.php Just in case I feel a 300 or 325 wsm in the near future. They even do a 450 marlin!

NW-GSP The site above has a cool page that shows you your choices in the ar-15 lineup. http://www.ar15-accuracy.com/

[Biggerhammer]

NW-GSP,

Be forewarned! This multi caliber AR game is a sickness, once you jump there is no support group other than the enabler crowd. You will be surfing the net or looking at firearms magazine or watching one of the Outdoor channels. Before you know it your on the computer or phone with plastic in your hand and stuff just starts showing up on the door step. Stuff you even forgot you ordered because last week was well, last week and your already off and running on the latest and greatest AR chambering.

It is useless to talk yourself into a new AR chambering with the thought process of you will use the same lower. NO! NO! NO! I guarantee more lowers will come along with piles of cool furniture to dress them up in.

It never ends!

[Heredoggydoggy]

I have seen posts from guys that have Olys and are happy with them.  Oly had some quality issues a while back, but I think they are solved now.  Once you get a bad name, it's really hard to live it down!

[Biggerhammer]

Seeing that OLY is 8-10 plus months out on a upper order. I can see that as a major deterrent.

[Heredoggydoggy]

Seeing that OLY is 8-10 plus months out on a upper order. I can see that as a major deterrent.

Yeah, that would be bad.  I waited 8 months for my 6mmx6.8 SPC barrel, but I think it was the move that held it up so long.  Finally I sent an Email saying that 8 months for a barrel was getting ridiculous, and a week later I had the barrel.  I ordered the barrel from Moses Lake, but it came from Oregon.  The workmanship was better than on my .20 LBC barrel, too.  I didn't have to run a thread chaser on the muzzle threads to put the brake/flash hider on.  Good thing it wasn't a "need it now" build!   

[hillbilli]

you can avoid all this.. "ar-15 cartridge change out" game.. by just going to a .308.. it solves the whole problem.. and rifles like the smith M&p10 that are lighter than the old ar-10's helps with the weight issuee. Just saying that if a general purpose hunting rifle is the question- my answer has always been .308...

[Biggerhammer]

you can avoid all this.. "ar-15 cartridge change out" game.. by just going to a .308.. it solves the whole problem.. and rifles like the smith M&p10 that are lighter than the old ar-10's helps with the weight issuee. Just saying that if a general purpose hunting rifle is the question- my answer has always been .308...

Got the .308 (Sig 716) covered. I just like to shoot different chamberings on the lighter AR15.

[Heredoggydoggy]

Most of us build odd-ball guns because we  LIKE them.  Not because we NEED them.    If you NEED a gun, buy an off-the-shelf gun.  It will cost you more to build one from parts.  You can get a nice Rock River AR for less than you can build one for!

[scottcrb]

Hopefully someday ill get a chance to build up a 6.5 grendle .

[NW-GSP]

NW-GSP,

Be forewarned! This multi caliber AR game is a sickness, once you jump there is no support group other than the enabler crowd. You will be surfing the net or looking at firearms magazine or watching one of the Outdoor channels. Before you know it your on the computer or phone with plastic in your hand and stuff just starts showing up on the door step. Stuff you even forgot you ordered because last week was well, last week and your already off and running on the latest and greatest AR chambering.

It is useless to talk yourself into a new AR chambering with the thought process of you will use the same lower. NO! NO! NO! I guarantee more lowers will come along with piles of cool furniture to dress them up in.

It never ends!

Hahaha , I can already feel the fever coming over me. I'm already thinking that no matter what caliber I go with this one I will end up building another one. It doesn't help when my good friend has his FFL and is going to be getting his class 3 license

[Heredoggydoggy]

NW-GSP,

It is useless to talk yourself into a new AR chambering with the thought process of you will use the same lower. NO! NO! NO! I guarantee more lowers will come along with piles of cool furniture to dress them up in.

It never ends!

An AR upper without it's own lower?  SACRILEGE!!!   

[JohnVH]

love my 6.5 Grendel

[Yondering]

Got the .308 (Sig 716) covered. I just like to shoot different chamberings on the lighter AR15.

Please share your thoughts about the 716.

I have a PTR 91 (308, 18" brl) that will shoot ~2 moa, but I'm wishing for sub moa accuracy. How bad do I need a 716?

[mountainman]

Yep, the 6.5 outdoes the 6.8. The 6/6.8 is and amazing round tho! Would be awesome on coyotes, killer on deer..the one i ran through its paces was phenomanally accurate with a Black Hole barrel. The Blackout is a completely different purposed round. It mimics the 7.62x39. Only lags about 50 yards behind the m855 in trajectory with a supersonic 125 at 2300 fps, makes it a 300-400 yard round in a good gun! Run it subsonic with a LeHigh lathe turned bullet with a payload round loaded subsonic, and you have a devestating 200 yard big game load that is, shall we say, "whisper" quiet!

[Biggerhammer]

Got the .308 (Sig 716) covered. I just like to shoot different chamberings on the lighter AR15.

Please share your thoughts about the 716.

I have a PTR 91 (308, 18" brl) that will shoot ~2 moa, but I'm wishing for sub moa accuracy. How bad do I need a 716?

For a production 16" carbine it acceptable. I very rarely shoot factory ammo, it's a solid MOA carbine with some factory match ammo (BlackHills 168). It's shot some 5 shot 3/4" groups with 165 BT handloads. The Hornady .308 Superformance ammo flat slung the bolt carrier group like the Apollo Moon shot on the first round fired. I had to set the gas system on the piston all the way open. I haven't shot it a whole lot.

[WoodlandShooter]

I have a 6.8 SPC. It's a good shooter. Can go to "almost" 500 yards shooting paper. It's only good for ~ 200 on deer tho...300BLK won't do that very well

It's a great companion setup when you have a bolt gun in 270 winchester 

it's basicly a "short" 270...6.8×43mm vs. 6.8x64mm...only need a supply of large rifle primers, and .277 bullets...will need some slightly faster powder for the 6.8 SPC tho.

from a standpoint of required "reloading supplies" the 300BLK would need an additional supply of 30 cal bullets, and smal rifle primers, and powder...even then, all you have is a 30-30 that is best run subsonic for suppressed use...I thought long and hard about the 300, and well, with the advent of the FNW Aero rifle in 45 ACP, the 300BLK does not make sence (at least it does not make sence for "me" as I am currently standardizing rifle calibers and reloading supplies...I have a Glock 21, and the Aero makes perfect sence)

But if you had a 30-06, 308, 300 Win Mag, then a 300 BLK would make sence...well kinda.

Regarding oddball AR chamberings, I have one...243WSSM...it's one finicky machine...

I also agree...a AR upper without a dedicated lower is basicly a very expensive Baseball Bat!!

[Lincoln4]

It is a disease.  I shot my first deer with my 6.8 last month.  Now I'm looking for the next best thing.  I am having fun!

[WoodlandShooter]

yup!!!

next would be a Noreen BN-36 in 270 winny...

after that, then it's time to go big...

338 Lapua...

then it's

50BMG

 

[mountainman]

Look at the Noreen in lapua, or even a Nemo Omen in 300 win! Both very fun, accurate guns to shoot!

[WoodlandShooter]

I called Noreen about the BN-36 in 270. They currently only offer it with a 1/10 twist. I also asked if it could handle some warm loads. They seemed a little uneasy about a 165 grain bullet with a 59.5 grain charge of Retumbo.